Paper bag



March 5, 1935.

R. L. BANGS El AL PAPER BAG Filed July 24, 1951 l l I 1 l I I 3 I I I I l I g l l I I I l l g l i I INVENTOR Rah/2 L. Bony: VVIY/Ibm Afiermanson ATTORNEY Patented Mar. 5, 1935 I v r UNITED STATES PATENT OFFICE PAPER BAG Ralph L. Bangs, Wakefield, and William A. Hermanson, Brighton, Mass., assignors to Forest I Wadding Company, Boston, Mass.

Application July 24, 1931, Serial No. 552,944

3 Claims. (Cl. 229-53) The present invention relates to a bag and Figure 2, and this joining extends downward to more particularly to a bag adapted to carry either the point where the batting 3 is inserted between hot or cold bodies and preserve the degree of heat the outer and inner cover. The batting 3 may or cold for some time. have on the inner side of it a second batting 4,, 5 Food stuffs in cold or hot state are frequently of a thinner and slightly different construction, '5

shipped in containers of a more or less permaas will be explained later and this second batting nent nature. Usually ordinary ice or dry ice is may not extend up asfar as the first so as to used to keep the food stuff cool, and this may be make a more gradual slope to the point where done by packing the ice around the food or by the inner and outer sheets are joined.

l0 putting the dry ice in a container within the While we have used batting in many cases, a container holding the food. Packing of this nawedding of the same composition as the batting ture applies more often for bulk shipment or but having a top and bottom sheet formed by a shipment in large quantity. Very little attensizing impregnating the top and bottom fibres tion has been paid to the ordinary vending of may be used.

hot or cold food stuff where the customer takes The batting as indicated above is preferably 15 the package home with him, and usually no proapplied in two layers, the thicker outer layer havvision is made to keep the food at its original ing paper covers 5, 5 at each side, and itself comtemperature. posed of one or more layers of batting having a The object of this invention is to provide an mixture of absorbent cotton fibres, rubberized inexpensive paper bag suitably made and capafibres, and jute. The outer paper covers may be 20 ble of keeping Whatever may be put in it, at 0 of water or moisture proof material, but prefern the O a temperature- The bag y be ably are plain flexible paper of suitable texture used to keep ice c a r it may be ed to e p and pliability. Asphaltum sheets may be used foods 110i, 945 Cooked meats, for instance; It may as a cover of the batting or in addition to the be used for Warm lunches if desired at Picnics paper cover, and preferably would be placed next 25 tc" for a y p p to the batting itself in case other paper was also The bag is constructed in such a way, that used y when it is closed it is completely sealed and pro- The batting 3 extends about t Sides of th vides also a completely sealed heat insulating bag as one continuous piece and h t inner batting about the material contained therein. paper covers joined t latex t 6 as indicated 30 The insulation of the bag has been particularly in Figure 3 though t inner paper may t short prep?'red connectlon Wlth the bag ltself and on the sides as indicated in Figure 6 and the latex provides such an ef licient type o insulation that or other suitable material used to join the batthe temperature If the bag 13 Pre'heatd ting proper itself and the outer paper cover. In

cooled, as the case may be, of the food practically this way the ends f the batting are sealed as 35 remams the Same number hoursindicated in Figures 3 and 6 and prevent any con- The natmie of the mventlon n Its advantages duction. or convection directly through the paper and uses will be more fully discussed and excovers of the bag. plained in connection with the embodiment of The inner batting 4 has a heavier Outer and 40 the m describfad in the Specification and inner paper cover than the batting 3 and tends 40 shown m the q i to provide in part a form on which the outer bat- In the drawing, Figure 1 shows a front view of ting can fit The covers 7 7 of the ihner the bag; Figure 2 shows a section taken on the line 2-2 in Figure 1; Figure 3 shows a section 325 zs sg than the outer battmg taken on the line 3-3 of Figure 1, Figure 4 shows In place of making the batting or waddmg as an enlar ed section taken throu h a small art of the 5 of the bag on the wherepthe described above, the insulating material may be of cellulose wood pulp made in creped webbed insulation is; Figure 5 shows the bag, somewhat in perspective as u and Figure 6 shows a sheets having a soft nap and laid together or the modification of the structure shown in Figure 3. Wood P p m y be h ed d m fi r f m and 50 The bag is composed of an outer and inner made asbatting 1 Wa m paper cover numbered 1 and 2 respectively. At A th p edge of the bag on n slde 15 a b the top open end portion of the bag, these covers or strip 8, having a metallic strip 9 inserted thereare joined together by means of latex or other in, and extending beyond the side edges of the equivalent substance as indicated more clearly in bag. This strip is folded over the open end of 55 the bag alter the contents are put in, and then rolled down to the point where the batting begins.

L The extended edges can then be folded about the edge of the bag to keep the bag closed properly. As indicated in Figure 5, a handle 10 may be riveted or otherwise aflixed to the side of the bag, but the top folded over may also serve tor this purpose and the handle omitted if desired.

Having now described our invention, we claim: 1. A paper bag comprising an inner and outer cover, a heavy insulating batting extending about the sides and bottom of said bag, means for joining the edges of said batting, a second lighter layer of batting adjoining the inner side 01' said I first layer; said second layer having a paper cover on the inner side thereon 2. A paper bag comprising an inner and an outer cover formed as separated elements and united in face to face relation only about the entire upper open end portion, the covers being otherwise free, an insulating layer of wadding positioned within the covers and extending in one piece about the closed lower end of the bag, the edges of the wedding at the sides coming together to completely enclose the inner bag.

3. A paper bag of the flat envelope type comprising an inner and an outer cover formed as separated elements and united in face to face relation only about the entire upper open end portion, the covers being otherwise free, an insulated layer of wadding positioned within the covers and extending about the closed lower end of thebag, the edges 01' the wadding substantially coming together at the sides and making a complete enclosure of the inner bag when the bag is filled.

RALPH L. BAN GS. WILLIAM A. HERMANSON. 

